Spader's ultra-confident salesman-turned-CEO Robert California wasn't meant to replace Carell's Michael Scott but he does step in as the show's big-name big personality. Carell had years to put his mark on The Office and make it his own. Spader's just getting started but who'd be surprised if he could Svengali us the way his character does everyone at Dunder Mifflin?
Image Credit: Justin Lubin/NBC; Chris Haston/NBC
David Caruso out, Jimmy Smits in. Shelley Long out, Kirstie Alley in. Michael J. Fox out, Charlie Sheen in. And now, Charlie Sheen out, Ashton Kutcher in, and Steve Carell out, James Spader in. See how shows in the past have handled the switch now under way at ''Two and a Half Men'' and ''The Office.''